Cool Cobalt Chiffon

#151c9d

Notes

Cool Cobalt Chiffon (#151C9D) is a true blue with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (237°, 76%, 35%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#151c9d

RGB

rgb(21, 28, 157)

HSL

hsl(237, 76%, 35%)